Which of the following statements accurately describes test-retest reliability?
1). Measure of consistency of test scores over time
2). Measure of consistency of scores obtained from two equivalent halves of the same test
3). Measure of consistency with which a test measures a single construct or concept
4). Measure of degree of agreement between two or more scorers, judges, or raters
Option (1)
(Updated by Reviewer)
3. Which of the following is not a form of nonrandom sampling?
4. A sampling distribution might be based on which of the following?
5. Which variable is deliberately manipulated by an experimenter to investigate its effect?
6. Independent variable is the variable which can be manipulated by the-